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Composite method of liquid crystal supermolecule material containing double photosensitive units

A synthetic method and supramolecular technology, applied in the field of photosensitive materials, can solve the problems of poor mechanical properties and thermal stability of azo small molecules, and difficult

Inactive Publication Date: 2012-07-04
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simple azo small molecules have poor mechanical properties and thermal stability, and it is difficult to use them independently as photosensitive materials in practical applications.

Method used

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  • Composite method of liquid crystal supermolecule material containing double photosensitive units
  • Composite method of liquid crystal supermolecule material containing double photosensitive units
  • Composite method of liquid crystal supermolecule material containing double photosensitive units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh azo ionic liquid crystals (AZO) and cinnamic acid ionic liquid crystals (CAM) and dissolve them in water or polar solvents. The molar ratio (AZO:CAM) of the two ionic liquid crystals is 9:1. Stir to make it dissolve completely, the concentration of ionic liquid crystal is 1g / L.

[0026] The structural formula of the azo ion liquid crystal is:

[0027] The structural formula of described cinnamic acid ion liquid crystal is:

[0028] (2) Weigh sodium polyacrylate and dissolve it in water or a polar solvent, stir at room temperature to dissolve completely, and the solution concentration is 10g / L. Sodium polyacrylate molecular weight: 5000-1000000.

[0029] (3) The sodium polyacrylate solution prepared in step (2) is added dropwise in the violently stirred ionic liquid crystal solution, and the amount dropped is determined by calculating the molar positive and negative charge ratio of 1: 1; Stirring was continued at 80°C for 2 hours, then cooled to room tem...

Embodiment 2

[0036] (1) Weigh azo ionic liquid crystals (AZO) and cinnamic acid ionic liquid crystals (CAM) and dissolve them in water or polar solvents. The molar ratio (AZO:CAM) of the two ionic liquid crystals is 8:2. Stir to make it dissolve completely, the concentration of ionic liquid crystal is 1g / L.

[0037](2) Weigh sodium polyacrylate and dissolve it in water or a polar solvent, stir at room temperature to dissolve completely, and the solution concentration is 10g / L. Sodium polyacrylate molecular weight: 5000-1000000.

[0038] (3) The sodium polyacrylate solution prepared in step (2) is added dropwise in the violently stirred ionic liquid crystal solution, and the amount dropped is determined by calculating the molar positive and negative charge ratio of 1: 1; Stirring was continued at 80°C for 2 hours, then cooled to room temperature.

[0039] (4) The assembly product was separated by suction filtration with a 0.45 μm microporous membrane, and the product was washed with water...

Embodiment 3

[0041] (1) Weigh azo ionic liquid crystals (AZO) and cinnamic acid ionic liquid crystals (CAM) and dissolve them in water or polar solvents. The molar ratio (AZO:CAM) of the two ionic liquid crystals is 7:3. Stir to make it dissolve completely, the concentration of ionic liquid crystal is 1g / L.

[0042] (2) Weigh sodium polyacrylate and dissolve it in water or a polar solvent, stir at room temperature to dissolve completely, and the solution concentration is 10g / L. Sodium polyacrylate molecular weight: 5000-1000000.

[0043] (3) The sodium polyacrylate solution prepared in step (2) is added dropwise in the violently stirred ionic liquid crystal solution, and the amount dropped is determined by calculating the molar positive and negative charge ratio of 1: 1; Stirring was continued at 80°C for 2 hours, then cooled to room temperature.

[0044] (4) The assembly product was separated by suction filtration with a 0.45 μm microporous membrane, and the product was washed with wate...

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Abstract

The invention discloses a composite method of a liquid crystal supermolecule material containing double photosensitive units, belonging to the technical field of photosensitive materials. Anion polyelectrolyte solution and azo-cinnamylic acid ion liquid crystal mixed liquor are mixed to react to obtain precipitate, and the liquid crystal supermolecule material is obtained after the precipitate iscleaned. The invention can change the phase behavior, the light orientation characteristic and the thermostability of the photosensitive supermolecule material by regulating the ratio of the two photosensitive units.

Description

technical field [0001] The invention relates to a method in the technical field of photosensitive materials, in particular to a method for synthesizing a liquid crystal supramolecular material containing double photosensitive units. Background technique [0002] Functional photosensitive materials have very important application value in the fields of high-density optical information storage, nonlinear optical material preparation, liquid crystal molecular orientation, light-driven smart materials, etc. Therefore, the development and design of new photosensitive materials has become a common concern of the scientific and industrial circles hotspot. Pure azo small molecules have poor mechanical properties and thermal stability, and it is difficult to use them independently as photosensitive materials in practical applications. At present, the preparation methods of functional photosensitive materials reported more mainly include host-guest doping method, covalent synthesis m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/06C08F12/30C08F8/32C08B11/12C09K19/38
Inventor 陈绪猛陆学民路庆华
Owner SHANGHAI JIAOTONG UNIV
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